Messages in this thread | | | Date | Wed, 10 Apr 2002 11:43:13 -0500 (CDT) | From | Brent Cook <> | Subject | Re: Mouse interrupts: the death knell of a VP6 |
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On Wed, 10 Apr 2002, Oleg Drokin wrote:
> Hello! > > On Wed, Apr 10, 2002 at 09:02:05AM -0500, Brent Cook wrote: > > > I have an ABIT VP6 motherboard, using the VIA Apollo chipset and 2 700Mhz > > PIII's, but please don't hold that against me. The system is running > > 2.4.19-pre6. I believe that I either have a system that has trouble > > handling a sudden bursts of interrupts, or have found a fault in mouse > > handling. > > Have you tried to change MPS mode to 1.1 from 1.4 (I see addres message timeouts > in your log)?
No, I had not. I will though, and will report if this causes some change. Everything looks fine for the first five minutes though.
> > I have already tried removing memory, adding memory, changing processors, > > video cards. The only thing that has remained constant is the VP6 > > motherboard and the hard drive. > > My VP6 died on me recently with some funny symptoms: > it hangs in X when I start netscape and move mouse, or if I do > bk clone on kernel tree, it dies with > kernel BUG at /usr/src/linux-2.4.18/include/asm/smplock.h:62!
Very interesting. I could do the same thing, and have a similar lock with a PS/2 mouse. I will start looking in smplock.h if the MPS change does not help.
> BUG in various places pretty soon. > (this BUG is only appears if 2 CPUs are present in motherboard). > So if your troubles began only recently, you might want to try another > motherboard just to be sure.
I received the motherboard used, so I do not know if this is a recent development. I have tried several other kernels which all show the same locking behavior with PS/2 mice (2.4.17, 2.4.18, 2.5.7-dj3.) The previous owner ran Windows XP (developer preview) on the board, and it had a tendency to lock often, especially under high IO. I attributed this to software issues, though now I wonder why the previous owner _really_ gave it to me!
I have used a Tyan Tiger 100 with two processors and an Intel BX chipset, with great success and no similar locks, so I am 50% certain that a hardware difference is the root cause of the problem. Hopefully, someone else will have seen similar problems.
> Bye, > Oleg >
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